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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A285363 Sum of the entries in the first blocks of all set partitions of [n].

Table of values

n a(n)
1 1
2 4
3 15
4 60
5 262
6 1243
7 6358
8 34835
9 203307
10 1257913
11 8216945
12 56463487
13 406868167
14 3065920770
15 24099977863
16 197179545722
17 1675846476148
18 14769104672839
19 134745258569108
20 1270767279092285
21 12371426210292311
22 124173909409948575
23 1283498833928098171

List of values

[1, 4, 15, 60, 262, 1243, 6358, 34835, 203307, 1257913, 8216945, 56463487, 406868167, 3065920770, 24099977863, 197179545722, 1675846476148, 14769104672839, 134745258569108, 1270767279092285, 12371426210292311, 124173909409948575, 1283498833928098171]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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